Scientists discovered that inoculating seedlings of Phoebe sheareri, a valuable Chinese tree species, with a special fungus called Serendipita indica significantly improves their ability to survive drought. The fungus colonizes plant roots and enhances photosynthesis, boosts the plant’s natural antioxidant defenses, and regulates growth hormones. This research suggests a practical and biological approach to improve seedling survival in nurseries and reforestation efforts, particularly in regions affected by drought and climate change.